//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//

package org.eclipse.jetty.rewrite.handler;

import org.eclipse.jetty.http.HttpURI;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.util.URIUtil;

import java.io.IOException;

/**
 * <p>Rewrites the URI by compacting to remove occurrences of {@code //}.</p>
 * <p>For example, {@code //foo/bar//baz} is compacted to {@code /foo/bar/baz}.</p>
 */
public class CompactPathRule extends Rule {
    @Override
    public Handler matchAndApply(Handler input) throws IOException {
        String path = input.getHttpURI().getCanonicalPath();
        String compacted = URIUtil.compactPath(path);

        if (path.equals(compacted))
            return null;

        HttpURI uri = Request.newHttpURIFrom(input, compacted);

        return new HttpURIHandler(input, uri);
    }
}
